num = int(input())

if 400 <= num and num <= 599:
    print("8")
elif num <= 799:
    print("7")
elif num <= 999:
    print("6")
elif num <= 1199:
    print("5")
elif num <= 1399:
    print("4")
elif num <= 1599:
    print("3")
elif num <= 1799:
    print("2")
elif num <= 1999:
    print("1") num = int(input()) num int(input()) int input() input if 400 <= num and num <= 599:
    print("8")
elif num <= 799:
    print("7")
elif num <= 999:
    print("6")
elif num <= 1199:
    print("5")
elif num <= 1399:
    print("4")
elif num <= 1599:
    print("3")
elif num <= 1799:
    print("2")
elif num <= 1999:
    print("1") 400 <= num and num <= 599 400 <= num 400 num num <= 599 num 599 print("8") print "8" elif num <= 799:
    print("7") num <= 799 num 799 print("7") print "7" elif num <= 999:
    print("6") num <= 999 num 999 print("6") print "6" elif num <= 1199:
    print("5") num <= 1199 num 1199 print("5") print "5" elif num <= 1399:
    print("4") num <= 1399 num 1399 print("4") print "4" elif num <= 1599:
    print("3") num <= 1599 num 1599 print("3") print "3" elif num <= 1799:
    print("2") num <= 1799 num 1799 print("2") print "2" elif num <= 1999:
    print("1") num <= 1999 num 1999 print("1") print "1" num = int(input()) int(input()) num
num = int(input())

if 400 <= num and num <= 599:
    print("8")
elif num <= 799:
    print("7")
elif num <= 999:
    print("6")
elif num <= 1199:
    print("5")
elif num <= 1399:
    print("4")
elif num <= 1599:
    print("3")
elif num <= 1799:
    print("2")
elif num <= 1999:
    print("1")